From 9a88f7da453eadc72d8f333700dbd80777feecd1 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@tele2.at>
Date: Sun, 25 Feb 2018 14:33:19 +0100
Subject: Initial commit

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
---
 servicecmd/disable.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 servicecmd/disable.c

(limited to 'servicecmd/disable.c')

diff --git a/servicecmd/disable.c b/servicecmd/disable.c
new file mode 100644
index 0000000..90d8b80
--- /dev/null
+++ b/servicecmd/disable.c
@@ -0,0 +1,75 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "servicecmd.h"
+
+static int cmd_disable(int argc, char **argv)
+{
+	int ret = EXIT_FAILURE;
+	char *linkname, *ptr;
+	struct stat sb;
+
+	if (argc < 2 || argc > 3) {
+		fputs("Wrong number of arguments for `disable'.\n"
+			"Try `service help disable' for more information.\n",
+			stderr);
+		return EXIT_FAILURE;
+	}
+
+	for (ptr = argv[1]; isalnum(*ptr) || *ptr == '_'; ++ptr)
+		;
+
+	if (*ptr != '\0') {
+		fprintf(stderr, "Invalid service name '%s'\n", argv[1]);
+		return EXIT_FAILURE;
+	}
+
+	if (argc == 3) {
+		ret = asprintf(&linkname, "%s/%s@%s",
+				SVCDIR, argv[1], argv[2]);
+	} else {
+		ret = asprintf(&linkname, "%s/%s", SVCDIR, argv[1]);
+	}
+
+	if (ret < 0) {
+		perror("asprintf");
+		return EXIT_FAILURE;
+	}
+
+	if (lstat(linkname, &sb)) {
+		fprintf(stderr, "lstat %s: %s\n", linkname, strerror(errno));
+		goto out;
+	}
+
+	if ((sb.st_mode & S_IFMT) != S_IFLNK) {
+		fprintf(stderr, "error: '%s' is not a symlink!", linkname);
+		goto out;
+	}
+
+	if (unlink(linkname)) {
+		fprintf(stderr, "removing %s: %s\n",
+			linkname, strerror(errno));
+		goto out;
+	}
+
+	ret = EXIT_SUCCESS;
+out:
+	free(linkname);
+	return ret;
+}
+
+static command_t disable = {
+	.cmd = "disable",
+	.usage = "<name> [argument]",
+	.s_desc = "disable a service",
+	.l_desc = "This disables a service by removing the coresponding "
+		  "symlink in " SVCDIR ".",
+	.run_cmd = cmd_disable,
+};
+
+REGISTER_COMMAND(disable)
-- 
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